The OneDrive cleaner that frees real space
TerraBytes is the OneDrive cleaner that scans every account, flags each duplicate, outdated, oversized and risky file, and the orphaned OneDrives of people who have left, then shows exactly what they cost you in euros and in CO₂. Clean up OneDrive storage in one scan, without deleting anything by accident.
Why OneDrive storage fills up
OneDrive is where personal work lands: drafts, downloads, screen recordings, a copy of that big deck "just in case". Because it belongs to individuals rather than a governed team site, nobody ever cleans it. Duplicates pile up, old versions linger, and giant downloads that were needed for an afternoon sit there for years, each one quietly costing storage, money and carbon.
The bigger, quieter problem is offboarding. When an employee leaves, their OneDrive rarely leaves with them. Unless someone deliberately deprovisions the account, it keeps consuming licensed storage indefinitely, full of files nobody will ever open again. Across a whole organization, these orphaned OneDrives can account for a startling share of a full tenant.
A dedicated OneDrive cleaner finds all of it for you. TerraBytes scans every account, ranks the biggest wins, and hands you a clear action plan instead of a request to buy more storage.
Every wasteful file, flagged
TerraBytes scans your OneDrive estate and surfaces the storage you can safely reclaim.
Duplicate & near-duplicate files
The same file saved five times, "report (1)", "report final", downloaded copies of shared docs: TerraBytes matches duplicates and near-duplicates across accounts and shows how much space collapsing them frees.
Orphaned accounts
OneDrives left behind by employees who have gone, still burning licensed storage months after offboarding. We surface them so you can archive or reclaim them safely.
Stale & oversized files
Files untouched for years and huge downloads, installers and media that were needed once. Classic ROT that is safe to archive or remove.
Risky & personal data
Personal or unencrypted files sitting in individual OneDrives create GDPR exposure. We flag both the storage cost and the compliance risk.
Most of it is waste you can reclaim
Around 52% of enterprise data is “dark data”: stored, powered and paid for, but never used. Source: Veritas Databerg
See your whole storage estate in minutes, not weeks of manual auditing.
Cost and carbon shown on every result, so you fix the biggest wins first.
Private by design: your data never leaves your environment.
Nothing is deleted automatically; you set the keep, archive and delete rules.
How the OneDrive cleanup works
1. Connect. Point TerraBytes at your Microsoft 365 tenant. It runs serverless and never moves your files.
2. Scan. One pass across every OneDrive account flags duplicates, old versions, stale and oversized files, orphaned accounts from departed employees, and compliance risk.
3. Act. You get a prioritized action plan with the storage, euro and CO₂ impact of each item. Define rules to keep, archive or delete. You stay in control, nothing is removed automatically.
The result: leaner OneDrive accounts, a smaller Microsoft 365 storage bill, and a documented, defensible cleanup you can show to security, compliance and finance.
Clean up your whole storage estate
SharePoint cleanup →
Reduce SharePoint storage: duplicates, version bloat, orphaned sites and ROT across your tenant.
Storage cleaner & optimizer →
The same scan across cloud and on-prem: NetApp, NAS and local drives.
GDPR & ROT data cleanup →
Find and remediate risky, personal and unencrypted files across your OneDrive accounts.
The hidden cost of storage →
Why unused data quietly drives up both cost and carbon emissions.
OneDrive cleanup questions
Run a TerraBytes scan across your OneDrive accounts. It flags duplicate and near-duplicate files, old versions, huge downloads and stale data, plus accounts left behind by employees who have gone, then shows the storage, euro and CO₂ impact of each so you can clean up safely by priority.
Unless someone deprovisions them, the OneDrive accounts of departed employees keep consuming licensed storage long after offboarding. TerraBytes surfaces these orphaned accounts, shows what they hold and what they cost, so you can archive or reclaim them with a clear audit trail.
No. TerraBytes flags and recommends. You decide what to keep, archive or delete using custom rules. Nothing is removed without your explicit action, so OneDrive cleanup stays fully under your control.
Yes. TerraBytes runs serverless inside your own Microsoft 365 tenant. Your data never leaves it and is encrypted in transit and at rest, so scanning OneDrive stays GDPR and CSRD aware.